Youre probably familiar with each of them
See Gardevoir exs Market Price on TCGPlayer 1
Having an instant-speed commander in the command zone is quite nice for a mono-blue deck, and you dont even need to have all that many Moonfolk in your deck to take advantage of that ability
The cover+sleeve should protect the card a bit from major damaging (the phone falling down), but Im worryed about the battery overheating
It turns out that there are more than a few creatures that get a lot better when you turn them into artifacts and give them a mana ability, especially if you want to give yourself a repetitive stress injury in your wrist by tapping and untapping Horseshoe Crab, Simic Ragworm, Soliton, or Morphling until they kick you out of the LGS
This can have some interesting value in multiplayer games, but be careful to not boost up your opponents too much